Die press



March 13, 1945.

c. w.VGooDw|N 2,371,580

DIE PRESS Filed oet. 15, 1943 4 sheets-sheet 1l March 13, 1945.

c.- w. GOODWIN DIE PREss Filed Oct. l5. 1943 4 Sheets-Sheet 2 c. w. lGooDwm 24,371,580

DIE PRESS March '13, 1945.

Filed Oct. l5, 1945 4 Sheets-Sheet 3 '51 INVENTOR.

milf/marina@ March y13, 1945. w, GOODMN 2,371,580

DIE PRESS Filed Oct, Vl5, 1943 INVENTOR.

fr] W fiddwzz BY 4 Sheets-Sheet 4 Patented Mar. 13, 1945 om PRESS yCarLW. Goodwin, North Plainfield, N. J., assignor to American Seal-KapCorporation of Delaware, Wilmington, DeL, a corporation of DelawareApplication October 15, 1943, lSerial No. 506,308

1 claim. (c1. en -'$6.15)V

This invention relates to a machine for feeding and "operating ondeformable stock such as paper, metal or the like,l and particularly toa machine for crimping or beading the edges of articles of this typewhich are used for a wide variety of purposes in the industrial arts.The object of the invention is to provide a new and improved machine ofthe above type for rapidly and emciently forming the articles andconveying them to the discharge point in a continuous stream or leWithout the intermediary of an-operator.

Another object of the invention is to provide a highA speed machine ofthe above type having novel andy improved'details of construction andfeatures ofv operation. y

Various other objects and advantages will be apparent'as the nature ofthe invention is more fully disclosed. l g lAlthough it Will be evidentfrom the ensuing description that my machine may be'used formanufacturing a wide variety of articles, I shall de scribe it inconnection with the manufacture of annular bands which are employed forreinforcingpaper capsfor jars,'bottles and the like, as disclosed in mycopending application, Serial No.

504,557, filed October 1, 1943. These paper caps l comprise a diaphragmportion and an upstanding annular skirt formed in a single piece, and anannular paper band surrounding the outer'surface of' said skirt andhaving a beaded peripheral edge in contact with said diaphragm, forreinforcing purposes.

The lannular paper band employed for reinforcing these caps may beformed in any desired manner. Usually, it is simply sliced or otherwisesevered from an elongated spirally wrapped v.tube of paper or cardboard.That is, I first form `beaded edge and simultaneously compact the bandto increase its strength and rigidity, and rl-v nally discharge thefinished bands at the delivery point, in a minimum time and without thesupervision of an operator.

` Although the novel features which are charac Ateristicl of thisinvention are set forth more in detail in the claimsl appended hereto,the nature and scope of the invention maybe better understood byreferring to the following'description, l

taken in connection with the accompanying drawings forming a partthereof, in which asp'e-v of illustration.

, .In the drawings;

Fig.l 1 is a top planview of a crimping machine embodying the invention;

Fig. 2 is avertical cross-section taken on the line 2+2 of Fig. 1; v

Fig. f3 is a cross-section taken on the line 3 3 of Fig. 2;. .Y v

Fig. 4 is a sectional view of the crimping die in the aligning position;

Fig. 5 is a sectional view of the crimping die yin its final crimpingposition; and

Fig. 6 is a transverse section through a paper cap having an outerreinforcing band crimped by the machine.

x In thefollowing description and in the claim certain'specic terms'`are used for convenience in referring to the various detailsuof theinvention. These terms, howevenare to'be interpreted as kbroadly as thestate'of the'art will permit.

f The machine shown inthe drawings comprises a fiat vertical wheelorcarrier I keyed at 2'to a rotatable horizontal shaft 3 which ismounted in bearings] on the'frame 5, as shown in Figs. 1 andz.

The' shaft 3 carrying Wheel I is driven intermittently rby' any suitabledriving means, not shown, rotation being ina clockwise direction asviewed in Fig. 2. V y

` Theiiat surface of wheel Icontains a circular series of identical,equally'spaced circular holes 6. 1 In the embodiment illustrated thewheel con` tains eight, such holes, the ,diameter of which is onlyslightly greater than that of the paper bands to be frictionallykcarried-therein as will herein- 'after more 1fully appear. vThe precisesize of the holes 6, which will depend upon the outer diameter of thepaper bands to be handled, maybe attained by fitting the holes withliners 1 secured to the wheel by set screws 8. The peripheral edges oflinersl are preferably rounded at il toffacili- .tate'the entry'andremoval of the paper bands.

During' its intermittent rotation the wheel I passes three operatingstations,as follows: station A, where the paper-bands I0 are insertedindividually intothe holes 6 of the wheel; station B, where ,the bandsare properly aligned'in the holes 6 and then crimped to provide thebeaded edge; andst'ation -Cf Wheretheuformed bands are discharged fromthe wheel. These three operating ystations are4 shown in Fig.. 3 of thedrawings. l

y v Charging 'I'he annular paper bands vHl are fed tothe chargingstation A,"from va hopper or other suitable source of supply, through a'vertical chute I2 which is secured by bracket I 3to the outer frameworkI4 of the machine.. The chute I2 is lof rectangular cross-section and ismounted parallel to and closely adjacent'the flat' face .of the AwheelI; and the Vlower side walls of the chute parallel to the wheel areprovided with openings I6 in alignment with` the openings lli in thewheel so that the lowermost band I9 in the chute will coincidesubstantially with an opening 6 in the wheel and thus be presented inposition to be moved into said opening during each intermittent pause inthe rotation of the wheel. i

The charging mechanismat station A comprises a plunger I8slidablymounted in a bearing I9 and actuated by any suitable mechanismcoordinated with the shaft 3 of wheel I as hereinafter more fullydescribed. Plunger I8 has a cylindrical head 2I in axial alignment withthe openings I6 in the feed chute I2 and therefore in axial alignmentwith any hole 6 in the wheel I which is presented in position *forcharging. A coil spring 22 compressed between the plunger head 2| andthe stationary bearing I 9 takes up any play in theplunger and insuresthe proper positioning of the head for the charging stroke.

The cylindrical plunger -head 2I` is slightly greater in diameter thanthe inner diameter of the annular paperlbands I and the forward engagingface of the head is reduced in diameter to provide a .continuous-ledge24 and a rounded peripheral edge 25 as shown in Figs.' l and 3.Accordingly, when the plunger I8 advances toward the right in Fig. 3 the`rounded peripheral edge 25 of head2! will slip into the annulus ofthelowermost band I8 in chute I2, even though such band may not beprecisely'algned in the chute, and the ledge 2410i the head willthereupon 'engage the annular edge of the `band :and'propel the bandinto thev hole 6 in the wheel I which at that moment has *paused in itsintermittent rotation to receive said band.' Entry of the band ID intothe hole 6 is facilitated by the rounded peripheral edge 9 of the liner1 as previously described. With the parts in the position shown in Fig.3, and band I Il has .ust been :inserted in the uppermost hole E of thewheel, the plunger I8 has just completed its return stroke away from thechuteIZ, another band I9 has just f dropped tothe bottom of the chuteunderthe weight of the superimposed file `of bands, and the wheel I isjust labout to rotate another step to bring the next succeeding emptyhole 6 into charging position at the station A.

Aligning and crimping The aligning and'crimping mechanism .at station Bincludes a cylindrical die 21 which I'call the aligning die, and acomplementary crimp-1 ameter upon which is mounted a slidable die head39, thel rearward annular portion 40 of said die head having `a flange4I which isxadapted to engage an internal ledge 42 on a cylindricalcollar 43 which forms the outer cylindrical wall of the die 28, to limitthe forward sliding movement of the die head. It will thus be evidentthat the die head 39 is capable of a limited sliding `-movement upon-thedie 28, toward and away from the aligning die 21. A coil spring 44compressed betweenv the end of plunger 36 and the inner wall of die head39 normally forces said outer cylindrical wall of die head 39, the outergroove thaty thematerial of the-'paper band I9 is forced to form thebeaded edge as hereinafter more fully described. .Tofacilitate thiscrimping action the die 21 maybe heated by a suitable electric heatingelement 32 connected by a conductor33'to any available source of heatingcurrent.

Ther crimping die 28fis keyed at 35 to a plunger 3l; slidablymounted'in' bearings v."i1'and actuated by any suitablemechanism'coordinated 'with the shaft 3 of wheelfI. :The crimpingidie 28hasan internal 'cylindrical-portions 38 of reduced-dlannular edge ofsaid collar 49 normally being flush with the iiat front face of the head39'as shown in Fig. 3. A circular groove 5I is formed in the said frontface of head 39 at its kjuncture with'the collar 49. This groove '5Icooperates with thecircular groove 3l inthe aligning die 21 in crimpingthe edgesof the paper `bands-II! during the forming operation, ashereinafter more fully described.

The cylindrical collar 43 forming the `outer cylindrical wall of die 28has a plurality of longitudinal holes 53 bored therein, these holes:being spaced apart equally and 'being parallel tothe axis of die 28.These holes 53 each contain coll springs 54 acting between the innerends of the holes andthe enlarged heads 55 of plungers 56 which extend.outwardly vthrough the forward edge of collar 43 and are threaded at 51Xinto the upstanding ange of the slidable collar :49, as shown in Figs.3 to 5. Tlrxe springs .54 normally force the plungers 56 outwardly tothe limit of their travel which is reached when the enlarged heads ofthe plungers engage the 'louter ends of holes 53, and at such time theouter annular edge oi the sliding collar 49 will lie flush vwith .theflat front face of the die head 39'as shown in Figs. 3 and 4.

'Ihe operation of the aligning and crimping mechanism atl station "B isillustrated in' Figs. 4 and 5. As previously explained, the aligning die21 and the crimping die 2B are mounted in axial alignment on oppositesides of the flat wheel I. Furthermore, these dies 21 and 28 are `sopositioned with respect to the wheel I that they are directly in thepath of travel'of the holes 6 in the wheel and in axial alignment witheach hole 6 which is successively presented between said dies duringeach intermittent pause in the rotation of the wheel. Since the wheeladvances in a clockwise direction as viewed inFig. 2, with any givenhole 6 presenting itself successively to the stations A, B and Cintheorder named, it will'be evident that each hole 6 arriving at thealigning and crimping station B will ,contain an annular paper band I8which was deposited therein at the preceding station A.

Accordingly, each time the wheel I stops momentarily, always with anannular paper band I0 occupying the hole 6 at station B, the plungers29. and `3I carrying dies 21 and 28' move to'- ward each other and thedies engage the respective peripheral edge of the annular paper band ID.

as shown in Fig. 4. At this instant one peripheral edge of the band I6is engaged in the circular groove 3| of die 21 while the oppositeperipheral edge of said band is engaged by the outer annular edge of theband 49 on the outer cylindrical wall of die head 39. Up to this instantthe diesvhave not yet deformed the paper band l but have merely clampedand properly aligned said band between them as shown in Fig. 4.

As the plunger 36 continues its advance toward the right in Fig. 4, thecollar 49 slidably mounted on die head 39 maintains its engagement withthe edge of paper band I6, andthe resistance afforded by said paper bandcauses the plungers 56 to compress the coil springs 54 in the co1lar43of die 28, so that f-or an instant the slidable collar 49 and itsplungers 56 are stationary While the remainder of the die continues itsadvance. The die head 39 thus enters the annulus of the paper band I6,resilientlyat first since the spring 44 takes up any initial resistancetothe passage of the head, until the at face lof die head 39 meets thecooperating face of Adie,21

'which previously reached the limit of its movement. At this time theedge of collar 43 of die 23 has engaged the upstanding flange 56 on theslidable .collar 49 which is already in clamping engagement with theedge of the paper band I6, so that the nal forward movement of die 28forces the collar 49 forward with considerable impact, thereby crimpingthe opposite edge ofthe paper band I6 over into thecomplementarycircular grooves 3| and 5| of die 21 and diehead 39 to form the beadededge 66 as shown'in Fig. 5.

The impact of the slidable collar 49 of die 28 the hole 6 of the wheel Iwhich at that moment has paused in its intermittent rotation, and thepaper band in that hole will be propelled by the head64 through vtheAdischarge opening 61 into the chute 66 in which it drops by gravity toany suitable delivery point. y I

In the operation of the machine all of the plungers I8, 29, 36 and 62move simultaneously; and the mechanisms actuating said plungers arecoordinated with the intermittent drive of the wheel so that each timethe wheel pauses in its intermittentoperation the plungers advance toperform the operations of charging, aligning upon the edge of paper bandI0, while said paper y band I6 is firmly clamped between the liner 1 ofhole 6 and the outer cylindrical wall of die head 39, not only causesthe formation of the beaded edge 60 but also results in compacting theentire material of the paper band and considerably increasing itsstrength and rigidity. The heating of the die 21 by heater 32 aidsineffecting and consolidating the formation of the beaded edge 66.

With the parts inthe position shown in Fig. 3, the paper band Ill atstation B has been completely formed, the dies 21 and 28 havejustreturned to their retracted positions, and the wheel is just aboutto rotate another step to bring the next succeeding paper band intovposition for forming.

Discharginy The mechanism for discharging the formed paper bands l0 atstation C comprises a plunger 62 slidably mounted in a bearing 63 andactuated by any suitable mechanism coordinated with the shaft 3 of wheelI. Plunger 62 has a cylindrical head 64 which is positioned to coincideexactly with each hole 6 in the wheel which is presented thereto duringeach intermittent pause in the rotation of the wheel. A coil spring 65compressed between the plunger head 64 and the 'stationary bearing |9insures the proper positioning of the head for the stroke which is todischarge the paper bands l0 from the wheel. A vertical discharge chute66 of rectangular cross-section is mounted parallel to and closelyadjacent the flat face of wheel on the side opposite to the plunger head64, and the side wall of said chute adjacent the wheel is provided withan opening 61 in alignment with the plunger head 64. y

Accordingly, when the plunger 62 advances toward the right in Fig. 3 thehead 64 will,enter and crimping, and discharging, as described above.Immediately thereafter the rplungers are simultaneously retracted to thepositions shown in Fig. 3, whereupon the wheel I advances another stepand the same operations are repeated.

The annular paper band l!) with the beaded edge 60, formed in the abovemanner, is part of a paper cap for jars, bottles and the like, which isshown in Fig. 6 andoomprises a diaphragm portion 69 and an upstandingmarginal iiange or skirt 16 having` integral screw threads 1l formed onits inner surface.

the skirt 10 until the beaded edge 60 is seated on the diaphragm 69, theband usually being secured to the skirt by a suitable adhesive.

Although a specic embodiment of the invention has Lbeen shown forpurposes of illustration it is to be understood that the invention iscapable of various uses and that changes and modifica- Utions may bemade therein as will be readily apparent to a person skilled in the art.The invention is only to be limited in accordance with the scope of theappended claim.

What is claimed is:

In a machine for crimping the edge of an face provided with a crimpinggroove adapted to mate with the groove in said aligning die to receiveand confine the edge of said band during the crimping operation, springmeans mounting said head on said carrier for retraction on said carrierin response to pressure of said aligning die to permit continued forwardmovement'of said carrier, a collar slidably mounted on said die head andhaving a flange to extend between said support and said die head toengage the edge of said band on the forward stroke of said carrier andto form with said head, support and aligning die a closed' die pressurechamber, spring means mounting said collar for retraction by said bandas the die head continues its movement to engage said aligning die, andstop means on said carrier to engage said collar after said head hasbeen brought into engagement with said aligning die to force said angeinto compacting engagement with the edge of said band to compact saidband in said pressure chamber and crimp the opposite edge of said bandinto said crimping grooves to form a crimped peripheral bead on saidedge. Y

CARL W. GOODWIN.

The cap is assembled by telescoping the reinforcing band I6 over

